A water balloon is tossed into the air with an upward velocity of 25 ft/s. Its height h(t) in ft after t seconds is given by the function h(t) = − 16t^2 + 25t + 3. After...
A water balloon is tossed into the air with an upward velocity of 25 ft/s. Its height h(t) in ft after t seconds is given by the function h(t) = − 16t^2 + 25t + 3. After...
A 27.8 gram mass oscillates on the end of a spring and its motion can be described by: (1.5 )sin (21.4 t ) [here the units are standard, meters and seconds] What are the following for...
A police car is driving past an observer sitting by the side of the road, what happens to the wavelengths of the siren as measured by the observer while the police car approaches to when he goes away...
At very fast car races the sound of the engine as a car approaches is much different than when it passes you. How fast would the car need to be going to have the change in frequency be one...
A pop bottle style instrument is played being open at one end closed at the other, if two successive frequencies, 350 Hz and 490 Hz, are produced, what is the fundamental frequency, and what harmonic...
A 27.8 gram mass oscillates on the end of a spring and its motion can be described by: (1.5 )sin (21.4 t ) [here the units are standard, meters and seconds] What are the following for this system:...
At very fast car races the sound of the engine as a car approaches is much different than when it passes you. How fast would the car need to be going to have the change in frequency...
We have discussed in class that Kepler posed his groundbreaking theory that planets travel in elliptical orbits about the sun, the importance of the conics was affirmed. Also The...
this is a questions about a lighthouse. the lighthouse is 175 feet tall, the beam of light shines up to 25 miles off the coast, and it rotates through one revolution per 15 seconds. it has a...
Driving slowly down a two-lane highway a large transport truck passes me going the same way as I am. As he does physics flashes before my eyes, and I think Bernoulli’s principle with pressure and...
velocity time graph
In considering density and buoyancy, a helium balloon floats in air even as wood floats on water. A father was bringing home balloons for a party and had attached the balloons to the seat of a van...
The new blade on my table saw has a radius of 15.0 cm. My table saw has a maximum speed of 3750 rpm. If it takes 2.50 seconds to get up to this final speed, what is the tangential velocity of the...
sitting in a tree 25 feet above the ground, your younger brother listens to your MP3 player. You ask him to give it to you, and he throws it to the ground at a speed of 20 feet/second. How long does...
Dart hits wheel. In terms of m, M, v0, and R (of wheel), find: A) angular speed of wheel B) ratios of initial and final kinetic energies
A toy rocket is launched from the ground level with an initial vertical velocity of 96 ft/s. After how many seconds will the rocket hit the ground?
She wishes to swim across a river to a point directly opposite from where she is standing.?The river is moving at a rate of 5km/h. Explain, with the use of a diagram, why this is not possible. Isn't...
A baseball player hits a foul ball straight up in the air from a height of four feet off the ground. The initial velocity as the ball comes off the bat is 130 feet per second. The motion of ball can...
In physics, transitional kinetic energy E(in joules) is given by the equation: E=1/2mv2,where m represents mass(in kilograms), and v the velocity (in meters per second). Find the velocity of a thrown...
the formula s(t) = −16t2 + v0t. (a) If the object hits the ground after 12 seconds, find its initial velocity v0. v0 = ft/sec (b) Find...